Bifocal: correction is given on the upper half of the lenses for distance and the lower half of the lenses for reading. Bunları da oku etibba E-Bülten şahsi Verilerin İşlenmesi: eşya maslahatlemleri https://carlysciq189350.pointblog.net/the-ultimate-guide-to-hipermetrop-nedir-70247816